Surface defects in gauge theory and KZ equation
Surface defects in gauge theory and KZ equation
复制标题
规范理论和KZ方程中的表面缺陷
DOI:
10.1007/s11005-022-01511-8
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发表时间:
2022
影响因子:
1.2
通讯作者:
Tsymbaliuk, Alexander
中科院分区:
文献类型:
--
作者:
Nekrasov, Nikita;Tsymbaliuk, Alexander
We study the regular surface defect in the-deformed four-dimensional supersymmetric gauge theory with gauge groupSU(N) with 2Nhypermultiplets in fundamental representation. We prove its vacuum expectation value obeys the Knizhnik–Zamolodchikov equation for the 4-point conformal block of the-current algebra, originally introduced in the context of two-dimensional conformal field theory. The level and the vertex operators are determined by the parameters of the-background and the masses of the hypermultiplets; the cross-ratio of the 4 points is determined by the complexified gauge coupling. We clarify that in a somewhat subtle way the branching rule is parametrized by the Coulomb moduli. This is an example of the BPS/CFT relation.
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DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
A. Zamolodchikov;V. Fateev
通讯作者:
V. Fateev
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
M. Finkelberg;L. Rybnikov
通讯作者:
L. Rybnikov
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
N. Nekrasov
通讯作者:
N. Nekrasov
影响因子:
5.4
作者:
Nathan Haouzi;Jihwan Oh
通讯作者:
Jihwan Oh
影响因子:
5.4
作者:
Norton Lee;N. Nekrasov
通讯作者:
N. Nekrasov